The Saturday Night Live star appeared on Marc Maron's WTF podcast on Monday, where he revealed a psychiatrist had diagnosed him with Borderline Personality Disorder.

"Around October [or] September last year, I started having these mental breakdowns where I would, like, freak out and then not remember what happened after. Blind rage," the 23-year-old comedian explained. "I never really did any other drugs [besides marijuana], so I was like, 'I'm gonna try to go to rehab. Maybe that'll be helpful."

"So I go and I get off weed. They told me there, they're like, 'You might be bipolar,' and I was like, 'OK.' So they're like, 'We're gonna try you on these meds,'" he added. "And then I got out [of rehab], and then I started smoking weed again -- and I'm on meds."

"I found out I have BPD, which is borderline personality disorder," Davidson shared "One of my psychiatrists [diagnosed me]... I'm depressed all the time."

Since then, Davidson has taken to therapy and changed medication, noting that he's finally starting to feel better -- slowly.

"It is working, slowly but surely," he said. "This whole year has been a f**king nightmare. This has been the worst year of my life, getting diagnosed with this and trying to figure out how to learn with this and live with this."